Hifonics Zeus 4 inch 2 way car audio coaxial speaker system with Mylar dome tweeter and Alpha-Cellulose Poly Woofer Cones nylon surrounds (pair). Features: Pair Hifonics ZS4CX 4" 350 Watt Coaxial Car Speakers Tweeter Dome Material: Neo-Mylar Soft Dome Tweeter Impact Resistant Tweeter Elements Surround: Rubber Moisture Resistant Rubber Surround with high Mid-Bass Impact Cone: Alpha-Cellulose Cones Light weight for speed and very rigid for deep bass Surround / Cone Coupling: High Temperature Adhesive Special adhesive is chosen to create a permanent bond between the cone and the surround Tinsel Leads: Braided Highly conductive while remain flexible during high power applications Voice Coil: Pure Copper Creates strong magnetic field with a very thin extrusion Voice Coil Former: Kapton Lightweight and efficiently dissipates heat Spider: Epoxy infused Natural Fiber Natural fiber allows flexibility while the epoxy which gives strength during the manufacturing process. Cooling System: Overcoil Air is exchanged over the voice coil through the spider Crossover Type: Passive Butterworth Smooth transition of frequencies from midrange/midbass to the tweeter element Frame Type: Anti-Resonant Stamped Steel Basket Very strong with minimal harmonics or distortions from flex or ringing Motor: Ferrite Magnet Creates a strong magnetic field while remaining small enough to fit nearly every application Connectors: Spade Use spade connectors or solder direct for the best connection Grills: No. Typical installation mounts speakers behind a panel or dash Tweeter Material: Neo-Mylar Soft Dome Great sound quality and increased reliability Tweeter Size: 1 inch Clear highs while handling plenty of power without sound harsh Tweeter Surround Material: Kapton Lightweight and efficiently dissipates heat Specifications: RMS Power Handling (CEA426B): 30 Maxx Power: 175 Speaker Impedance: 4Ω Frequency Response +/- 3dB: 55 Hz - 19 kHz Sensitivity (1 watt/1 meter): 88 db Crossover Point: 6 khz Crossover Slope: 12dB Mounting Diameter/Cut Out: 3.69 Outside Diameter: 5.39 Mounting Depth/Chassis Depth: 3 Dimensions12.06 x 6.19 x 3.13 in Weight: 2.2 lbs
